Can you simplify these algebraic expressions: A2 + C2 - B2, 2 imes C2, and B2 imes 3 + A2?

The first expression is $A^2 + C^2 - B^2$.

$$A^2 + C^2 - B^2$$

The simplified expression is $\boxed{A^2 + C^2 - B^2}$.

The second expression is $2 \times C^2$.

$$2 \times C^2 = 2C^2$$

The simplified expression is $\boxed{2C^2}$.

The third expression is $B^2 \times 3 + A^2$.

$$B^2 \times 3 + A^2 = 3B^2 + A^2$$

The simplified expression is $\boxed{3B^2 + A^2}$.